from tkinter import *
print("Введите начальную координату X:")
X=int(input())
print("Введите начальную координату Y:")
Y=int(input())
print("Введите начальную координату N:")
N=int(input())
coords=[0,0,10,0,10,10,20,10,20,0,30,0,30,20,0,20]
if N == 0 and X>=0 and X<=500 and Y>=0 and Y<=500:
    pass
else:
    if N > 0 and 0*N+X>=0 and 0*N+Y>=0 and 20*N+X<=500 and 20*N+Y<=500:
        pass
    else:
        if N < 0 and 20*N+X>=0 and 20*N+Y>=0 and 0*N+X<=500 and 0*N+Y<=500:
            pass
        else:
            print ("размер фигуры превышает максимальный размер поля")
            exit()
root = Tk()
root.title('ИТ марафон')
root.geometry('500x500')
canvas = Canvas(bg='white',width=500,height=500)
canvas.pack(anchor=CENTER,expand=1)

canvas.create_polygon(coords[0] *N+X,coords[1] *N+X,
                      coords[2] *N+X,coords[3] *N+X,
                      coords[4] *N+X,coords[5] *N+X,
                      coords[6] *N+X,coords[7] *N+X,
                      coords[8] *N+X,coords[9] *N+X,
                      coords[10] *N+X,coords[11] *N+X,
                      coords[12] *N+X,coords[13] *N+X,
                      coords[14] *N+X,coords[15] *N+X)
root.mainloop()
